[Bug 1922297] Re: 20.10 to 21.04: snap does not upgrade channel

Tue Apr 20 16:25:52 UTC 2021

The verification passed for an upgrade from Bionic to Focal with the
dist-upgrader in -proposed on an Ubuntu desktop system.

bdmurray at clean-bionic-amd64:~$ snap list
Name                  Version                Rev   Tracking         Publisher   Notes
core18                20210309               1997  latest/stable    canonical✓  base
gnome-3-34-1804       0+git.3556cb3          66    latest/stable/…  canonical✓  -
gnome-calculator      3.36.0+git9.96b95fd2   748   latest/stable/…  canonical✓  -
gnome-characters      v3.34.0+git8.a46106b   550   latest/stable/…  canonical✓  -
gnome-logs            3.34.0                 100   latest/stable/…  canonical✓  -
gnome-system-monitor  3.36.0-12-g35f88a56d7  148   latest/stable/…  canonical✓  -
gtk-common-themes     0.1-50-gf7627e4        1514  latest/stable/…  canonical✓  -
snap-store            3.38.0-59-g494f078     518   latest/stable/…  canonical✓  -
snapd                 2.45.2                 8542  latest/stable    canonical✓  snapd
bdmurray at clean-bionic-amd64:~$ snap info gtk-common-themes
name:      gtk-common-themes
summary:   All the (common) themes
publisher: Canonical✓
store-url: https://snapcraft.io/gtk-common-themes
contact:   https://gitlab.gnome.org/Community/Ubuntu/gtk-common-themes/issues
license:   unset
description: |
  A snap that exports the GTK and icon themes used on various Linux distros.
snap-id:      jZLfBRzf1cYlYysIjD2bwSzNtngY0qit
tracking:     latest/stable/ubuntu-20.04
refresh-date: today at 08:48 PDT
channels:
  latest/stable:    0.1-50-gf7627e4 2020-11-27 (1514) 67MB -
  latest/candidate: 0.1-50-gf7627e4 2020-11-25 (1514) 67MB -
  latest/beta:      0.1-50-gf7627e4 2020-11-25 (1514) 67MB -
  latest/edge:      0.1             2020-04-17 (1503) 58MB -
installed:          0.1-50-gf7627e4            (1514) 67MB -
bdmurray at clean-bionic-amd64:~$ head /var/log/dist-upgrade/main.log 
2021-04-20 08:17:15,936 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2021-04-20 08:17:15,936 INFO uname information: 'Linux clean-bionic-amd64 5.4.0-72-generic #80~18.04.1-Ubuntu SMP Mon Apr 12 23:26:25 UTC 2021 x86_64'
2021-04-20 08:17:16,370 INFO apt version: '1.6.13'
2021-04-20 08:17:16,370 INFO python version: '3.6.9 (default, Jan 26 2021, 15:33:00) 
[GCC 8.4.0]'
2021-04-20 08:17:16,373 INFO release-upgrader version '20.04.32' started

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https://bugs.launchpad.net/bugs/1922297

Title:
  20.10 to 21.04: snap does not upgrade channel

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released
Status in ubuntu-release-upgrader source package in Bionic:
  Fix Committed
Status in ubuntu-release-upgrader source package in Focal:
  Fix Committed
Status in ubuntu-release-upgrader source package in Groovy:
  Fix Committed
Status in ubuntu-release-upgrader source package in Hirsute:
  Fix Released

Bug description:
  [Impact]

  Snaps tracking a stable/ubuntu-$version (other than gnome-3-34-1804
  and gtk-common-themes) are not upgraded during the release upgrade
  process.

  Per LP: #1827951 and LP: #1748581, it would appear that if a snap is
  tracking a release channel (e.g. latest/stable/ubuntu-20.10), during a
  do-release-upgrade the snap channel should update to the new release.
  Testing of a Google cloud image, from 20.10 to 21.04 the google-cloud-
  sdk does not get updated.

  # Expected result

  After a do-release-upgrade, the snap channel for google-cloud-sdk
  should be updated from "latest/stable/ubuntu-20.10" to
  "latest/stable/ubuntu-21.04".

  # Actual result

  After install, the snap continues to track
  "latest/stable/ubuntu-20.10".

  [Test Plan]
  GCE image test
  --------------
  1. Boot 20.04 GCE image
  2. snap info google-cloud-sdk --> "latest/stable/ubuntu-20.04"
  3. do-release-upgrade
  4. accept defaults and reboot
  5. snap info google-cloud-sdk --> "latest/stable/ubuntu-20.10"

  With the version from -proposed the snap will be tracking
  "latest/stable/ubuntu-20.10"

  Ubuntu (18.04, 20.04) Desktop test (regression test)
  ----------------------------------------------------
  1. Create an Ubuntu 20.04 installation (w/ ubuntu-desktop)
  2. Run 'do-release-upgrade -p' to upgrade to Groovy
  3. Ensure that the gtk-common-themes (and gnome-3-34-1804) snap is now tracking "latest/stable/ubuntu-20.10" via snap-info

  With the version from -proposed all installed snaps which track
  "latest/stable/ubuntu-20.04" will also be upgraded to
  "latest/stable/ubuntu-20.10".

  Ubuntu (16.04) Desktop test plan (new feature)
  ----------------------------------------------
  1. Create an Ubuntu 16.04 installation w/ ubuntu-desktop
  2. Run 'do-release-upgrade' to upgrade to Ubuntu 18.04
  3. Run snap list and verify that no snaps are installed

  With the version of the release upgrader in -proposed you will have a
  set of snaps installed which are equivalent to the snaps that are
  preseeded in Ubuntu 18.04. That list of snaps is:

  gnome-3-34-1804, gnome-calculator, gnome-characters, gnome-logs,
  gnome-system-monitor, and gtk-common-themes.

  [Where Problems could occur]
  This could regress the upgrading of snaps for Ubuntu desktop images but we've identified that and created a regression test for that scenario.

  # Logs

  main.log https://paste.ubuntu.com/p/kbSvM5JMzP/
  screenlog.0 https://paste.ubuntu.com/p/h5kvtcX5Z6/
  apt-term.log https://paste.ubuntu.com/p/gNJVzbtT4Z/

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